(1) by inserting "(other than an intermittent nonproducing
livestock operation such as a stockyard or a holding and sorting facility)" after
"feeding operation"; and

(2) by adding at the end the following: "The term does
include an intermittent nonproducing livestock operation if the average number of animal
units that are fed or maintained in any 90-day period exceeds the number of animal units
determined by the Administrator or the State (in the case of a State with an approved
permit program under section 402) to constitute a concentrated animal feeding operation or
if the operation is designated by the Administrator or State as a significant contributor
of pollution."